test(bootstrap): update to use ionicBootstrap

src/components/spinner/test/basic/index.ts

@@ -1,7 +1,8 @@
-import {App} from '../../../../../src';
+import {Component} from '@angular/core';
+import {ionicBootstrap} from '../../../../../src';
 
 
-@App({
+@Component({
   templateUrl: 'main.html'
 })
 class E2EApp {
@@ -11,3 +12,5 @@ class E2EApp {
     this.paused = !this.paused;
   }
 }
+
+ionicBootstrap(E2EApp);